Journal
CURRENT MEDICAL RESEARCH AND OPINION
Volume 20, Issue -, Pages S53-S58Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1185/030079903125002611
Keywords
blood pressure; complication costs; diabetes; total cholesterol; high-density lipoprotein; glycaemic control; life expectancy; modelling
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Objectives: Various factors influence the risk of complications in type 2 diabetes patients. The isolated impact of single risk factors on long-term outcomes is unclear. The aim of this study was to calculate the projected effects on life expectancy (LE), quality-adjusted LE (QALE) and total costs of complications (TC) of 10% improvements in baseline levels of either total cholesterol (T-CHOL), high-density lipoprotein cholesterol (HDL), systolic blood pressure (SBP), glycosylated haemoglobin (HbA(1c)), and all four parameters combined. Methods: A cohort of newly diagnosed patients (baseline age 52 years, HbA(1c) 9.1%, SBP 137 mmHg, T-CHOL 212 mg/dL, and HDL 39 mg/dL) was defined. The CORE Diabetes Model was used to simulate LE, QALE and TC (US third-party payer perspective discounted at 3% annually) over patients' lifetimes, assuming no change in risk factors, an isolated 10% improvement in each parameter, or a 10% improvement in all parameters simultaneously. Results: Improved HbA(1c) led to increases in LE and QALE of 1.00 and 0.81 years respectively, and decreased TC of (US) $10,800/patient. Improved SBP led to improvements in LE and QALE of 0.67 and 0.55 years respectively and decreased TC of $7,049. Decreased T-CHOL led to improvements in LE and QALE of 0.29 and 0.20 years, respectively, and increased TC of $1,923. Increased HDL led to improvements in LE and QALE of 0.28 and 0.18 years respectively, and increased TIC of $2,162. Simultaneous improvements in all parameters led to projected improvements in LE and QALE of 2.17 and 1.72 years respectively, and decreased TIC of $14,533. Conclusions: Combined improvements in HbA(1c), lipid levels and SBP produced the greatest benefits in terms of LE, QALE and TC. A 10% improvement in HbA(1c) had the greatest impact on these three outcomes.
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